Connecting fitting, bearing wall provided with same, and building using same

Abstract

A connecting fitting includes a vertical frame attachment section 15 a that can be attached to an inner surface of a vertical web 7 a of a vertical frame 7 A, 7 B by way of bolts B 2 in a state where the vertical frame attachment section 15 a is disposed along the vertical web 7 a , a brace attachment plate 14 , connected to the vertical frame attachment section 15 a , which enables attachment of an end of a brace 10 A, 10 B at a position inward of the vertical frame 7 A, 7 B, and a fixing plate 11 , welded to the vertical frame attachment section 15 a , which can be fixed to a beam member 4 or a foundation 2 in a state where the fixing plate 11 is disposed along an outer surface of a lateral frame 8 A, 8 B facing outward in a state of being disposed to make up a frame shape.

The invention claimed is: 
     
       1. A connecting fitting used for forming a bearing wall which includes a pair of vertical frames and a pair of lateral frames disposed to make up a frame shape and braces that support forces generated in the vertical frames and the lateral frames, and which is fixed to at least one of a foundation and a beam member of a building, the connecting fitting being capable of connecting an end section of each vertical frame and an end section of each lateral frame, and comprising:
 a vertical frame attachment section that can be attached to an inner surface of the vertical frame, by way of a threaded member, in a state where the vertical frame attachment section is disposed along the inner surface of the vertical frame facing inward in a state of being disposed to make up a frame shape; 
 a brace attachment section, connected to the vertical frame attachment section, which enables attachment of an end of the brace at a position inward of the vertical frame attachment section; and 
 a fixing plate, welded to the vertical frame attachment section, which can be fixed to the beam member or the foundation in a state where the fixing plate is disposed along an outer surface of the lateral frame facing outward in a state of being disposed to make up a frame shape; 
 wherein each vertical frame has a vertical web, a pair of vertical flanges rising inward from both edges of the vertical web, and a pair of vertical lips extending from the pair of vertical flanges in a direction of coming close to each other; 
 the connecting fitting further comprises a vertical fitting section capable of fitting into the vertical frame along the longitudinal direction of the vertical frame, and a pair of extension sections extending parallelly to each other from the vertical fitting section at a spacing that enables passage between the pair of vertical lips; and 
 the brace attachment section is welded to the pair of extension sections in a state where the brace attachment section is disposed so as to straddle across the pair of extension sections. 
 
     
     
       2. The connecting fitting according to  claim 1 ,
 wherein the vertical fitting section comprises the vertical frame attachment section disposed along the vertical web, a pair of vertical flange arrangement sections disposed along the pair of vertical flanges, and a pair of vertical lip arrangement sections disposed along the pair of vertical lips; and 
 the vertical frame attachment section, the pair of vertical flange arrangement sections, the pair of vertical lip arrangement sections and the pair of extension sections are configured integrally. 
 
     
     
       3. The connecting fitting according to  claim 1 ,
 wherein each lateral frame has a lateral web, a pair of lateral flanges rising inward from both edges of the lateral web, and a pair of lateral lips extending from the pair of lateral flanges in a direction of coming close to each other, and has a cross-sectional shape identical to the cross-sectional shape of the vertical frame; and 
 the connecting fitting further comprises a lateral fitting section, provided in the pair of extension sections, which can fit into the lateral frame along the longitudinal direction of the lateral frame. 
 
     
     
       4. The connecting fitting according to  claim 3 ,
 wherein the lateral fitting section has a lateral web arrangement section disposed along the lateral web, a pair of lateral flange arrangement sections disposed along the pair of lateral flanges, and a pair of lateral lip arrangement sections disposed along the pair of lateral lips; and 
 the pair of lateral flange arrangement sections that can be attached to the lateral flanges by way of threaded members. 
 
     
     
       5. The connecting fitting according to  claim 4 ,
 wherein a gap that enables sandwiching of the lateral web in a thickness dimension is formed between the lateral web arrangement section and the fixing plate. 
 
     
     
       6. The connecting fitting according to  claim 1 ,
 wherein the vertical fitting section is stood on the fixing plate, and 
 a gap that enables sandwiching of the pair of vertical lips in a thickness direction is formed between the vertical fitting section and the lateral fitting section. 
 
     
     
       7. A bearing wall that is fixed to at least one of a foundation and a beam member of a building, the bearing wall comprising:
 a pair of vertical frames and a pair of lateral frames disposed to make up a frame shape; 
 four connecting fittings capable of connecting end sections of the vertical frames and end sections of the lateral frames; and 
 two braces each provided between two connecting fittings which are disposed in a diagonal of the frame shape among the four connecting fittings, the braces supporting forces generated in the vertical frames and the lateral frames, 
 wherein the four connecting fittings are the connecting fitting according to  claim 1 . 
 
     
     
       8. A building, comprising:
 a foundation; 
 a beam member; and 
 the bearing wall according to  claim 7 , fixed to at least one of the foundation and the beam member. 
 
     
     
       9. A connecting fitting used for forming a bearing wall which includes a pair of vertical frames and a pair of lateral frames disposed to make up a frame shape and braces that support forces generated in the vertical frames and the lateral frames, and which is fixed to at least one of a foundation and a beam member of a building, the connecting fitting being capable of connecting an end section of each vertical frame and an end section of each lateral frame, and comprising:
 a vertical frame attachment section that can be attached to an inner surface of the vertical frame, by way of a threaded member, in a state where the vertical frame attachment section is disposed along the inner surface of the vertical frame facing inward in a state of being disposed to make up a frame shape; 
 a brace attachment section, connected to the vertical frame attachment section, which enables attachment of an end of the brace at a position inward of the vertical frame attachment section; and 
 a fixing plate, welded to the vertical frame attachment section, which can be fixed to the beam member or the foundation in a state where the fixing plate is disposed along an outer surface of the lateral frame facing outward in a state of being disposed to make up a frame shape, 
 wherein each vertical frame has a vertical web, a pair of vertical flanges rising from both edges of the vertical web, a pair of vertical lips extending from the pair of vertical flanges in a direction of coming close to each other, and a pair of vertical cutout sections resulting from cutting out the pair of vertical lips over a predetermined vertical area from an end of the vertical frame; 
 the vertical frame attachment section can be attached to an inner surface of the vertical web, by way of a threaded member, in a state where the vertical frame attachment section is disposed along the inner surface of the vertical web facing inward in a state of being disposed to make up a frame shape; 
 the connecting fitting further comprises a pair of extension sections, extending parallelly along the pair of vertical flanges from both edges of the vertical frame attachment section, which are led out inward from the vertical frame through the pair of vertical cutout sections; and 
 the brace attachment section is welded to the pair of extension sections in a state where the brace attachment section is disposed so as to straddle across the pair of extension sections, such that the brace attachment section enables attachment of an end of the brace at a position inward of the vertical frame attachment section. 
 
     
     
       10. The connecting fitting according to  claim 9 ,
 wherein each lateral frame has a lateral web, a pair of lateral flanges rising inward from both edges of the lateral web, a pair of lateral lips extending from the pair of lateral flanges in a direction of coming close to each other, a first lateral cutout section resulting from cutting out the lateral web over a predetermined lateral area from an end of the lateral frame, and a pair of second lateral cutout sections resulting from cutting out the pair of lateral lips over the predetermined lateral area, and has a cross-sectional shape, identical to the cross-sectional shape of the vertical frame over an area outside the predetermined vertical area, over an area outside the predetermined lateral area; and 
 the pair of extension sections that can be attached, by way of threaded members, to the pair of lateral flanges that are positioned within the predetermined lateral area and are disposed so as to sandwich the pair of extension sections. 
 
     
     
       11. The connecting fitting according to  claim 9 ,
 wherein the fixing plate has an contact surface that can contact an entire end face of the vertical web that is attached to the vertical frame attachment section. 
 
     
     
       12. The connecting fitting according to  claim 9 ,
 wherein the vertical frame attachment section and the pair of extension sections are configured integrally. 
 
     
     
       13. The connecting fitting according to  claim 9 ,
 wherein the pair of extension sections is welded to the fixing plate. 
 
     
     
       14. A bearing wall that is fixed to at least one of a foundation and a beam member of a building, the bearing wall comprising:
 a pair of vertical frames and a pair of lateral frames disposed to make up a frame shape; 
 four connecting fittings capable of connecting end sections of the vertical frames and end sections of the lateral frames; and 
 two braces each provided between two connecting fittings which are disposed in a diagonal of the frame shape among the four connecting fittings, the braces supporting forces generated in the vertical frames and the lateral frames, 
 wherein the four connecting fittings are the connecting fitting according to  claim 9 . 
 
     
     
       15. A building, comprising:
 a foundation; 
 a beam member; and 
 the bearing wall according to  claim 14 , fixed to at least one of the foundation and the beam member.